src/share/classes/com/sun/security/jgss/ExtendedGSSContext.java

@@ -30,10 +30,11 @@
 /**
  * The extended GSSContext interface for supporting additional
  * functionalities not defined by {@code org.ietf.jgss.GSSContext},
  * such as querying context-specific attributes.
  */
+@jdk.Supported
 public interface ExtendedGSSContext extends GSSContext {
     /**
      * Return the mechanism-specific attribute associated with {@code type}.
      * <br><br>
      * For each supported attribute type, the type for the output are